KOCHETOV'S SHOP ACOUSTIC STRUCTURE Russian patent published in 2015 - IPC E04B1/84 

FIELD: machine building.

SUBSTANCE: claimed structure comprises shop carcass, bearing walls of the floor and ceiling lined with noise-absorbing structures, window and door openings, and single noise absorbers including the carcass to house noise-absorbing material to be arranged above noisy equipment. Said floor rests on flexible bed and includes the location plate made of concrete of reinforced damping material. Said plate is arranged on mounting plate of the floor with cavities penetrating through the layers of damping material and waterproofing material with clearance relative to industrial room bearing walls. Single noise absorbers are composed of the noise absorber element consisting of the case with flap cover and filled noise-absorbing material and fitted in protective shell. The case walls are composed of noise-absorbing structures composed of cylindrical perforated inner and outer coaxial shells with noise absorber arranged there between. Said noise-absorbing material represents the plates of basalt-based mineral cotton, or mineral cotton, or basalt cotton, or glass wool. Sound-translucent material is used to line said sound absorbing material over its entire surface. Noise absorber material represents a porous noise-absorbing material, for example, foam aluminium, or cermet, or foam metal, or compacted grit of hard damping material, for example, elastomer, polyurethane. Drop ceiling consists of the stiff carcass to be suspended from industrial building ceiling with noise-absorbing structure accommodated therein and wrapped with acoustically sonolucent material. Perforated sheet is secured to said carcass. The latter is shaped to rectangular parallelepiped with side sizes a x b in plan, their ratio located in optimum range of a:b = 1:1…2:1.

EFFECT: higher efficiency of noise suppression.

4 cl, 7 dwg, 2 tbl